World leader in the construction and maintenance of transport infrastructure

The Colas Group operates in all lines of business related to the construction and maintenance of roads and other forms of transport infrastructure (air, rail, maritime), urban development and recreational facilities, through two operating units: Roads, (including civil engineering and building)...

Your talents at the heart of our projects: join us

Colas offers careers in each of its lines of business (Roads, Railways, Road Equipment, Waterproofing, Pipelines, Building & Civil Engineering), allowing people the opportunity to flourish and express their potential.

Our agencies in France

R&D at the heart of our businesses

The task of the R&D teams in the Colas Group is to meet the current and future needs of customers, users and those working in the field.

Linking the road and art, two worlds where travel beckons

Founded in the early 1990s, the Colas Foundation seeks to promote works of art in the fields of painting.

Responsible commitment

The cornerstones on which Colas’ responsible development policy are built are twofold: first, the Group’s businesses endeavor to satisfy essential needs and aspirations (social cohesion, climate change, housing and transport needs, improved living environments, etc.). Second, this activity can and must be performed responsibly.


The Colas Group’s diversity and equal opportunity policy hinges on four main themes: social inclusion, disability, gender diversity and age management.

Read more


As a response to an increasing need to share public space, Colas has imagined a new solution to optimize infrastructure and guide mobility.

Read more